Mercurial > trustbridge > nss-cmake-static

annotate nspr/pr/src/io/prmmap.c @ 3:150b72113545

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Add DBM and legacydb support
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:32:02 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2 /* This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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5
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6 /*
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7 *********************************************************************
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8 *
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9 * Memory-mapped files
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10 *
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11 *********************************************************************
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12 */
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13
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14 #include "primpl.h"
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15
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16 PR_IMPLEMENT(PRFileMap *) PR_CreateFileMap(
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17 PRFileDesc *fd,
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18 PRInt64 size,
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19 PRFileMapProtect prot)
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20 {
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21 PRFileMap *fmap;
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22
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23 PR_ASSERT(prot == PR_PROT_READONLY || prot == PR_PROT_READWRITE
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24 || prot == PR_PROT_WRITECOPY);
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25 fmap = PR_NEWZAP(PRFileMap);
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26 if (NULL == fmap) {
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27 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
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28 return NULL;
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29 }
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30 fmap->fd = fd;
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31 fmap->prot = prot;
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32 if (_PR_MD_CREATE_FILE_MAP(fmap, size) == PR_SUCCESS) {
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33 return fmap;
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34 } else {
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35 PR_DELETE(fmap);
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36 return NULL;
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37 }
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38 }
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39
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40 PR_IMPLEMENT(PRInt32) PR_GetMemMapAlignment(void)
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41 {
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42 return _PR_MD_GET_MEM_MAP_ALIGNMENT();
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43 }
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44
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45 PR_IMPLEMENT(void *) PR_MemMap(
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46 PRFileMap *fmap,
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47 PROffset64 offset,
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48 PRUint32 len)
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49 {
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50 return _PR_MD_MEM_MAP(fmap, offset, len);
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51 }
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52
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53 PR_IMPLEMENT(PRStatus) PR_MemUnmap(void *addr, PRUint32 len)
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54 {
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55 return _PR_MD_MEM_UNMAP(addr, len);
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56 }
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57
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58 PR_IMPLEMENT(PRStatus) PR_CloseFileMap(PRFileMap *fmap)
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59 {
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60 return _PR_MD_CLOSE_FILE_MAP(fmap);
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61 }
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62
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63 PR_IMPLEMENT(PRStatus) PR_SyncMemMap(
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64 PRFileDesc *fd,
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65 void *addr,
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66 PRUint32 len)
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67 {
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68 return _PR_MD_SYNC_MEM_MAP(fd, addr, len);
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69 }
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